/* Quick Image Fix - Image Converter | Brand: #667eea, #764ba2 */

html, body { overflow-x: hidden; }

/* Skip link (accessibility) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: #667eea;
  color: white;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 1rem;
  outline: 2px solid #764ba2;
  outline-offset: 2px;
}

/* Header */
.header {
  -webkit-backdrop-filter: saturate(180%) blur(8px);
  backdrop-filter: saturate(180%) blur(8px);
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 0.75rem;
  color: #2d3748;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover {
  color: #667eea;
  background: rgba(102, 126, 234, 0.08);
}
.nav-link-active {
  color: #667eea !important;
  font-weight: 600;
  background: rgba(102, 126, 234, 0.1);
}
.nav-link-disabled {
  color: #a0aec0 !important;
  cursor: not-allowed;
  pointer-events: none;
}

.dropdown-menu {
  z-index: 60;
}
.dropdown-item {
  white-space: nowrap;
}
.badge-coming {
  font-size: 0.7rem;
  color: #718096;
  margin-left: 0.25rem;
}

/* Mobile menu */
.mobile-menu[aria-hidden="false"] .mobile-drawer {
  transform: translateX(0);
}
.mobile-menu[aria-hidden="false"] .mobile-overlay {
  opacity: 1;
  pointer-events: auto;
}
.mobile-menu[aria-hidden="true"] { pointer-events: none; }
.mobile-menu[aria-hidden="false"] { pointer-events: auto; }
.mobile-menu .mobile-overlay {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
@media (max-width: 767px) {
  .mobile-drawer { -webkit-overflow-scrolling: touch; }
  .mobile-nav-list a { min-height: 44px; display: flex; align-items: center; }
  .hamburger { min-width: 44px; min-height: 44px; display: inline-flex !important; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
  .hamburger .hamburger-icon { width: 24px; height: 2px; min-height: 2px; background-color: #2d3748; border-radius: 1px; margin: 0; display: block; }
}

/* Upload zone */
.upload-zone.over {
  border-color: #667eea;
  background: rgba(102, 126, 234, 0.06);
}

/* Upload preview cards (thumbnail + format badge) */
.upload-preview-card .upload-preview-thumb {
  display: block;
  min-height: 100px;
}
.upload-format-badge {
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

/* Buttons */
.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.35);
}
.btn-primary:hover:not(:disabled) {
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.45);
}

/* Quality slider (cross-browser) */
#quality-slider {
  -webkit-appearance: none;
  appearance: none;
  background: #e2e8f0;
  height: 8px;
  border-radius: 4px;
}
#quality-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #667eea;
  cursor: pointer;
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
#quality-slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #667eea;
  cursor: pointer;
  border: 2px solid white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Result cards */
.result-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 0.75rem;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.result-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.result-card .thumb {
  aspect-ratio: 1;
  object-fit: contain;
  background: #f7fafc;
}
.result-card .badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 0.25rem;
}
.result-card .download-btn {
  background: #667eea;
  color: white;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  transition: opacity 0.2s, background 0.2s;
}
.result-card .download-btn:hover {
  opacity: 0.9;
  background: #5a67d8;
}

/* FAQ accordion */
.faq-question:hover {
  background: #f7fafc;
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  transition: max-height 0.3s ease-out;
}

/* Focus styles (accessibility) */
a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .mobile-drawer,
  .faq-answer,
  .skip-link {
    transition: none;
  }
}